
'use strict'

const request = require('../../test-helpers/context').request
const assert = require('assert')

describe('req.hostname', () => {
  it('should return hostname void of port', () => {
    const req = request()
    req.header.host = 'foo.com:3000'
    assert.strictEqual(req.hostname, 'foo.com')
  })

  describe('with no host present', () => {
    it('should return ""', () => {
      const req = request()
      assert.strictEqual(req.hostname, '')
    })
  })

  describe('with IPv6 in host', () => {
    it('should parse localhost void of port', () => {
      const req = request()
      req.header.host = '[::1]'
      assert.strictEqual(req.hostname, '[::1]')
    })

    it('should parse localhost with port 80', () => {
      const req = request()
      req.header.host = '[::1]:80'
      assert.strictEqual(req.hostname, '[::1]')
    })

    it('should parse localhost with non-special schema port', () => {
      const req = request()
      req.header.host = '[::1]:1337'
      assert.strictEqual(req.hostname, '[::1]')
    })

    it('should reduce IPv6 with non-special schema port as hostname', () => {
      const req = request()
      req.header.host = '[2001:cdba:0000:0000:0000:0000:3257:9652]:1337'
      assert.strictEqual(req.hostname, '[2001:cdba::3257:9652]')
    })

    it('should return empty string when invalid', () => {
      const req = request()
      req.header.host = '[invalidIPv6]'
      assert.strictEqual(req.hostname, '')
    })
  })

  describe('when X-Forwarded-Host is present', () => {
    describe('and proxy is not trusted', () => {
      it('should be ignored', () => {
        const req = request()
        req.header['x-forwarded-host'] = 'bar.com'
        req.header.host = 'foo.com'
        assert.strictEqual(req.hostname, 'foo.com')
      })
    })

    describe('and proxy is trusted', () => {
      it('should be used', () => {
        const req = request()
        req.app.proxy = true
        req.header['x-forwarded-host'] = 'bar.com, baz.com'
        req.header.host = 'foo.com'
        assert.strictEqual(req.hostname, 'bar.com')
      })
    })
  })
})
